@congreso_internacional{503,
  author = {Luis Martínez and Luis Gonzaga Pérez and Manuel José Barranco},
  title = {Un sistema de Recomendación Multigranular basado en Conocimiento},
  year = {2006},
  pages = {645-664},
  month = {November 30th-December 2nd},
  publisher = {XIII of International Association for Fuzzy Set Management and Economy SIGEF 2006},
  address = {, Hammammet (Tunisia)},
}